view uptools/libcoding/gsm7_encode.c @ 964:a96cb97b66a2

ringtools/imy: fix duplicate definition of tdma_durations[] The bug was reported by Vadim Yanitskiy <fixeria@osmocom.org>, although the present fix is slightly different from the contributed patch: because main.c doesn't need this tdma_durations[] array at all, let's simply remove the reference to this array from main.c rather than turn it into an extern. I no longer remember my original thought flow that resulted (by mistake) in tdma_durations[] being multiply defined in main.c and durations.c. My intent might have been to define all globals in main.c and have the reference in durations.c be an extern - and I missed that extern - but without clear memory, I have no certainty. In any case, having this data array defined in the same module that fills it (durations.c) is sensible, so let's make it the new way.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 31 Aug 2023 19:38:18 +0000
parents 061f8d75083d
children ec7e23d5151f
line wrap: on
line source

/*
 * This library module implements the function for encoding from ISO 8859-1
 * into the GSM 7-bit default alphabet (03.38 or 23.038).
 */

#include <sys/types.h>

extern u_char gsm7_encode_table[256];

latin1_to_gsm7(inbuf, outbuf, outmax, outlenp)
	u_char *inbuf, *outbuf;
	unsigned outmax, *outlenp;
{
	u_char *ip = inbuf, *op = outbuf;
	unsigned outcnt = 0, c, n;

	while (c = *ip++) {
		c = gsm7_encode_table[c];
		if (c == 0xFF)
			return(-1);
		if (c & 0x80)
			n = 2;
		else
			n = 1;
		if (outcnt + n > outmax)
			return(-2);
		if (c & 0x80) {
			*op++ = 0x1B;
			*op++ = c & 0x7F;
		} else
			*op++ = c;
		outcnt += n;
	}
	*outlenp = outcnt;
	return(0);
}